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Hi Andy, Thanks for your input. That's a good point and one which I hadn't considered to be the case. I figured that if the string frequency had been guessed wrong then the pitchbend data at least would be reliable. Aparently the Zeta Mirror 6 works on this principle. I've been trying to find someone who's used one to pick their brains on its reliability in this regard. Not to worry though, I can still use piezo outputs for picking intensity and possibly derive pitch shifting by comparing a frequency output from an oscillator set to the derived pitch with the audio from the guitar. A DC bias for string bend may be derivable from that.. Failing all this, Whew!... Some sort of strain/pressure guage on each string may yield the information I need. Though I imagine there would be calibration issues with that one. We'll see... :-) Gareth > From: akbutler@tiscali.co.uk > To: Loopers-Delight@loopers-delight.com > Subject: Re: analogue guitar > > Gareth Whittock wrote: > > Well keep us posted if you ever get your hands on one Tom. > > I guess one of these, with its rock solid, super fast note detection and > > a standard midi interface for string bending and pluck strength would do > > it for me. It remains to be seen whether it ever comes to market. > > Then I'd be looking for a left-handed copy... oh dear.. > > > > hi Gareth, > the standard midi interface, as it exists today anyway, > is unlikely to behave in the way you expect. > The Note-On is a "fast as possible" guess, and > one function of the pitch bend data is to quickly > correct guesses that were out by a semitone or 2. > > That's why a midi guitar won't play right at all > if the pitch bend on the detector doesn't match > that on the synth. > > So a your rock solid instantaneous switching system > would be messed up by unexpected semitone or tone > jumps. > > Unfortunately you'll still be relying on the midi > note-on conversion for accuracy. > > > The kind of lookup table you described to sort out > the midi CC into the right notes would be easy to > achieve in Plogue Bidule ( in case it's not possible with > the software you're using). > > Suggestion. > It's possible to do pitch detection with Bidule, so you > could make a hybrid system where the original note > is got by your hardware switching, and the bend info > is then calculated. > > > andy > > > Get a free e-mail account with Hotmail. Sign-up now. |